What is meant by binary tree?
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What is comparator interface used for?
Can you declare an array without assigning the size of an array?
What is stack in data structure with the example?
Describe tree database.
When will you sort an array of pointers to list elements, rather than sorting the elements themselves?
What are priority queues?
Are lists mutable?
What is the difference between length () and size () of arraylist?
How do I push an element into a stack?
What method removes the value from the top of a stack?
In tree construction which is the suitable efficient data structure? (a) Array (b) Linked list (c) Stack (d) Queue (e) none
Is hashmap sorted?